What does the interosseous nerve supply?
What does the interosseous nerve supply?
The anterior interosseous nerve (volar interosseous nerve) is a branch of the median nerve that supplies the deep muscles on the anterior of the forearm, except the ulnar (medial) half of the flexor digitorum profundus. Its nerve roots come from C8 and T1.
What muscles does the posterior interosseous nerve innervate?
The posterior interosseous nerve is a motor nerve and sequentially innervates supinator, extensor carpi radialis brevis, extensor digitorum communis, extensor digiti minimi, extensor carpi ulnaris, abductor pollicis, extensor pollicis brevis, extensor pollicis longus, and extensor indicis.
What is interosseous syndrome?
Anterior interosseous syndrome is a medical condition in which damage to the anterior interosseous nerve (AIN), a distal motor and sensory branch of the median nerve, classically with severe weakness of the pincer movement of the thumb and index finger, and can cause transient pain in the wrist (the terminal, sensory …
What is the function of the posterior interosseous nerve?
The posterior interosseous nerve, also known as the dorsal interosseous nerve, is the continuation of the deep branch of the radial nerve after it penetrates the supinator muscle. It carries fibers from the C7 and C8 spinal nerves and supplies the majority of the muscles in the posterior compartment of the forearm.
What does the term interosseous mean?
[ ĭn′tər-ŏs′ē-əs ] adj. Connecting or lying between bones.
Where is the interosseous nerve?
The anterior interosseous nerve (AIN) is the terminal motor branch of the median nerve. It branches from the median nerve in the proximal forearm just below to the elbow joint. It is about 5–8 cm distal to the lateral epicondyle and 4 cm distal to the medial epicondyle.
What does posterior interosseous nerve branch from?
The posterior interosseous nerve officially originates from the deep branch of the radial nerve under the arcade of Frosche (supinator arch), a fibrous arch at the superior aspect of the supinator muscle.
How do you identify a musculocutaneous nerve?
Starts here5:08Musculocutaneous Nerve – Everything You Need To Know – Dr. Nabil …YouTube
Is the musculocutaneous nerve sensory or motor?
The musculocutaneous nerve is a mixed motor and sensory nerve. It arises from the lateral cord of the brachial plexus and receives contributions from C5–C7 cervical roots.
What are interosseous muscles?
The interossei muscles are intrinsic muscles of the hand located between the metacarpals. They consist of four (or three) palmar and four dorsal muscles that, respectively. These muscles are responsible for finger adduction and abduction.
